Room 6 is hidden, and can only be accessed by doing specific things :)

Re the bug: That is weird, but I'll definitely take a look. After you left the room once you should be able to rotate (buttons or swipe) if you come back.

Lever room: The two different hints is simply due to it being random, so you get a different answer each time you start the game! Trying not to give too much, I can say that each hint gives you a number which you can then use to figure out the answer!

You're welcome. And thank you for your reply. I totally get you. Not giving away stuff and spoiling it fit the others is very nice. I had some problems myself with what I posted because of the spoilers.

Can't find a chat or pn-feature here. :/

Still, I must've had like ten playthroughs or so trying anything and everything I could think of, but I can't get that room to show up. I think my brain is getting mushy.